Fire-escape.



- PA ENT-En JUNE 30, 19 03;

' W. H. LOGAN. FIRE ESCAPE. Arrmonlon 'IILBD .APR. 15', 1903.

no menu.

INVENTOR I W1 T/VESSE;

UNITED STATES Patented Juno, 1903 PATENT OF ICE.

WILLIAM HUME LOGAN, OF LOUISVILLE, KENTUCKY, ASSIGN OR TO KIRKER- BENDERFIRE ESCAPE COMPANY, OF LOUISVILLE, KENTUCKY.

FIRE-ESCAPE,

SPECIFICATION forming part of Letters Patent No. 732,645, dated. June3t), 1903.

Application filed April 15. 1903.

To all whom it may concern.-

Be it known that LWILLIAM HUME LOGAN,

a citizen of the United States, residing at Louisville,in the county ofJ eiferson and State of Kentucky, have invented certain new and usefulImprovements in Fire-Escapes; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in theart to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to fire-escapes, and more particularly to thatclass of fire-escapes which comprise a spiral way or slide inclosedwithin a vertical cylinder or tower.

The object of my invention is generally to improve the construction andoperation of this class of fire-escapes; and with this object in view myinvention consists in the improved construction or arrangement andcombination of parts hereinafter fully described and afterwardspecifically pointed out in the claims.

In the accompanying drawings, Figure l is a perspective view of part ofa fire-escape constructed in accordance with my invention, parts beingbroken away to more fully illustrate the construction. Fig. 2 is adetail sectional view on a horizontal plane cutting through the centralsupportand spiral slideway. Fig. 3 is an end view of the sheet formingthe central support after the edges have been bent in and before bendingin in the center. Fig. 4 is a detail view of the central support readyto receive the slideway. Fig. 5 is a view similar to Fig. 2,illustrating a slightly-modified form. Fig. 6 is a detail view showingthe edges of the central support bent out. Fig. 7 is a horizontalcross-section thereof. Fig. 8 is a view of a modification.

Like letters of reference mark correspondin g'parts wherever they appearin the several figures of the drawings.

Referring to the drawings by letters, Aindicates a vertical cylinder,column, or tower, which may be erected in a building or outside SerialNo. 152,751. (No model.)

thereof and adjacent thereto in any suitable 5 manneigaccessbeing' hadto the interior thereof at the top or at suitable intervals by any knownor approved means, the construction of the tower or the means of accessto its interior forming no part of the present invention. In theinterior of the tower is erected a spiral slideway B, composed of sheetmetal, whose outer edge rests against the inner surface of the tower andis secured thereto in any suitable manner. slideway B is secured to acentral twisted support D, composed of sheet metal, prepared by firstbending the edges inward, as at E, until they reach the main body,leaving smooth or somewhat rounded surfaces, and then bending ordoubling them upon themselves at the center, as atF, the bent or foldededges meeting, as shown. The inner edge of the slideway is placedbetween the folds of the central support D and secured by rivets 7o G.It will of course be understood that the central support will be twistedto correspond with the spirally-arranged inner edge of the slideway. Inthe construction shown in Fig. 4 the metal of the central support D isbent or donbled upon itself at the center and then bent to form toreceive the edge of the slideway B,

the folded center being placed upon the top or face of the spiralslideway and presenting a rounded edge or surface, the same as in theother form, the object being to avoid expos ing a sharp edge of'thecentral support D upon the face of the slideway, thus insuring I theusers of the slideway against injury to the 8 5 person or clothing bycontact with such rough edges in sliding down the slideway. I

In the modification shown in Fig.8 the inner edge of the slideway is,bent back upon itself, which sufliciently stifiens the same, so that thecentral support may be entirely dispensed with, thus greatlysimplifyinglthe entire arrangement.

The construction and operation of the invention will be obvious from theforegoing description, taken in connection with the illustrations, and Idesire it to be understood that I hold that any slight changes in theconstruc- The inner edge of the 6o tion of the various parts, such asmight be made by the ordinary mechanic after inspecting my invention,would be clearly included within the limit and scope of my in- Vention.

Having thus described the construction and operation of my invention,what 'I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. In a fire-escape, the combination with a cylinder or tower, of aspiral slideway therein, composed of sheet metal, secured to the innersurface thereof, and a central support consisting of sheet metal,doubled upon itself, and then doubled over the inner edge of theslideway and secured thereto, substantially as described.

2. In a fire-escape, the combination with a cylinder or tower, of aspiral slideway therein, composed of sheet metal secured to the innersurface thereof, and a central support consisting of sheet metal,doubled upon itself, and then doubled over the inner edge of theslideway and secured thereto, the edge of the support on the one face ofthe slideway being folded to form a rounded or smooth edge or surface,substantially as described.

3. In a fire-escape, the combination with a cylinder or tower, of aspiral slideway therein composed of sheet metal secured to the innersurface thereof, and a central support consisting of sheet metal doubledinward at the edges and then doubled over the inner edge of the slidewaypresenting rounded edges upon the front and rear, or upper and lowerface of the slideway, and secured to said inner edge, substantially asdescribed.

t. In a fire-escape, the combination with the cylinder or tower, of aspiral slideway therein composed of sheet metal secured to the innersurface thereof, the inner edge of said slideway being folded back uponitself to stiffen the same, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM HUME LOGAN.

\Vitnesses:

Ross S. DOWLING, ASA '1. IIoRRELL.

